Home / 99,188.51-136,903.97-56,771.65

Finding the Fourth Proportional to 99,188.51, 136,903.97 and 56,771.65

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Solution

The fourth proportional to 99,188.51, 136,903.97 and 56,771.65 is: 78,358.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,188.51 : 136,903.97 = 56,771.65 : x
  2. Step 2: Convert to fraction form
    99,188.51/136,903.97 = 56,771.65/x
  3. Step 3: Cross multiply
    99,188.51x = 136,903.97 × 56,771.65
  4. Step 4: Simplify right side
    99,188.51x = 7,772,263,984.59
  5. Step 5: Solve for x
    x = 7,772,263,984.59/99,188.51
  6. Step 6: Final answer
    x = 78,358.51

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.